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Motion and Energy

TermDefinition
position the location of an object
reference point a location at which another location is compared
motion an objects change in position relative to a reference point
speed the distance traveled divided by the time interval during which the motion occurred
vector a quantity that has both size and direction
velocity the speed of an object in a particular direction
acceleration the rate at which velocity changes over time, an object acceleration if its speed, direction
centripetal acceleration the acceleration directed toward the center of of a circular path
force a push pull exerted on an in order to change the motion of the oobject
net force the combination of all of the forces acting acting on an object
inertia the tendency of an object to resist a change in motion unless an outside force acts on the objects
gravity a force of attraction between objects that is due
free fall the motion of a body when only the force of gravity is acting on the body
orbit the path that a body follows as it travels around other bodies in space
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